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BalanceTutor user manual 200824.doc
Signal Description:
The graph shows medial lateral movements of COP annotated by time points relating to the
perturbation event and the body sway.
Zone A: Natural body sway behavior before perturbation
Zone B: Body reaction during the perturbation event
Zone C: Regaining of the natural body sway after perturbation
Time Point 1: Start of the recording
Time Point 2: Perturbation event
Time Point 3: First overshoot of the COP peak following perturbation event
Time Point 4: First undershoot of the COP peak following perturbation
Time Point 5: Return to resting sway
Recovery Time [msec]:
Time from perturabtion event to regain resting sway following
perturbation event
Reactive Response Time [msec]: Time from perturabtion event to first overshoot of COP peak
Peak [mm]:
Distance in mm from first overshoot to first undershoot
COP Travel [mm]:
Sum of the total length of COP excursions between perturbation
event and return to resting sway